the mega millions holiday, megamania. We told you about the two winning tickets. One of the largest jackpots in u.S. History. 636 million. And abc's aditi roy is live in san jose, california, where one of those golden tickets was sold. Good morning, aditi. Reporter: Good morning, lara. I'm standing in front of jenny's gift store here in san jose, california. You can see, it's closed right now. But it's where one of the winning tickets was sold. And now, the big question remains, who is that lucky winner? Tonight's megaball number is 7. Reporter: Those are the winning numbers that have made christmas come early for two, very lucky people. Overnight, lottery officials confirming two winning tickets sold. One in san jose, california, and the other in atlanta, georgia. It's good for san jose, you know? Hopefully somebody will be richer. Reporter: After 21 drawings and no winners since early october, the streak had been broken. The jackpot soared to the second-largest in lottery history. 636 million. That's $318 million apiece. Jenny's gift store in san jose is where one of the tickets was sold. This past may, there was a single ticket winner outside tampa, florida, who won the powerball's $590 million drawing, making her still the largest single-ticket winner ever. In 2012, the megajackpot reached $656 million. There were three winners in three different states who split that monumental jackpot. What do I have to lose? It's a dollar. I took a chance. Reporter: Now, everyone's eagerly awaiting to find out who bought that winning ticket here from jenny's gift store in san jose. By the way, the odds of that person winning was 1 in 259 million. Lara, someone's waking up with a lot of holiday cheer this morning. Absolutely. A very merry christmas. Thank you, aditi. Want to bring in mike boettcher. He's in the second winning location in atlanta, georgia. Good morning, mike. Reporter: Good morning, lara. Well, the ticket was bought in a newsstand in this building behind me, the alliance center in buckhead, which is one of the wealthiest sections of atlanta. Inside the building, public relations firms, law firms. And as well, a very top-scale restaurant. Now, the owner of this newsstand could take home $1 million. This building sold for $140 million this past summer. So, I figure that the person who bought this ticket could buy this building outright and have about $30 million to take home with him. Lara? So nice, mike. They are two very lucky winners. They aren't the only two in the country taking home cold, hard cash. There's 20 lucky million-dollar winners across 15 states, as well. A lot of christmas gifts there.

This transcript has been automatically generated and may not be 100% accurate.

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